Ram unveiled the new 2025 Ram Chassis Cab trucks, featuring a 6.7-L Cummins Turbo Diesel engine with power take-off (PTO) capability for left- and right-side operation.

Ram’s heaviest haulers offer a combination of upfitter-friendly innovation, durability, and capability.

“The Ram Chassis Cab line represents our hardest working trucks — designed and engineered to run at maximum capability all day, every day,” Ram Brand CEO Tim Kuniskis said. “In this segment, durability, low cost of ownership, and innovative upfitter solutions are top of mind for our customers and our engineering and planning teams.”

Built in Saltillo, Mexico, the 2025 Ram 3500, 4500, and 5500 Chassis Cab trucks go on sale in Q1 2025 with a starting price of $49,285, including destination (Ram 3500 Chassis Cab 60 in.).

Pricing

• Ram 3500 Chassis Cab – $49,285, including destination

• Ram 4500 Chassis Cab – $55,660, including destination

• Ram 5500 Chassis Cab – $56,770, including destination

Engine Upgrades, Towing Capacity, and Advanced Features

The 2025 Ram Chassis Cab offers customers two engine options — the new 6.7-L Cummins Turbo Diesel engine and the standard 6.4-L HEMI® V-8 engine. A new electronic column shifter and TorqueFlite HD eight-speed automatic transmission are standard equipment on both engines.

The all-new 6.7-L Turbo Diesel engine is rated at 360 hp and 800 lb.-ft. of torque, while the 6.4-L HEMI V-8 is rated at 375 hp and 429 lb.-ft. of torque.

Working closely with Cummins, the 6.7-L inline-6-cylinder Turbo Diesel engine boasts several improvements in drivability, fuel economy, durability, startability, serviceability, and noise, vibration, and harshness (NVH).

A redesigned block and head, heavy-duty pistons, a new performance intake manifold, a new turbo, larger intake/exhaust valves for improved port flow, and a higher-pressure fuel system enhance the diesel’s durability and efficiency.

The new Cummins engine uses improved intake port geometry for top feed injectors, top load lubrication, and integrated fuel filters.

Also new for 2025, the selectable oil change interval allows customers to elect B20 biodiesel for notification on proper oil change timing:

• B20 biodiesel oil change interval – 12,000 miles

• Regular diesel oil change interval – 15,000 miles

The new 2025 Ram Chassis Cab trucks integrate the TorqueFlite HD eight-speed automatic transmission with lower cruise engine revolutions per minute (rpm). The TorqueFlite HD eight-speed automatic transmission and new electronic column shifter are now standard on both engine options.

Capability includes a maximum towing capacity of 34,540 lbs. (5500) and a maximum payload of 11,960 lbs. (5500).

For 2025, Ram Chassis Cab trucks feature updated grilles depending on the selected trim level. New premium LED headlamps, including twin bi-functional projectors, are available, while LEDs are now standard.

Ram Chassis Cab’s Upfitter-Ready Innovations

Ram’s heaviest haulers, built with upfitter friendliness in mind, are classified as medium-duty vehicles and offer higher payload and towing ratings than Class 2-3 heavy-duty pickups.

Chassis Cab trucks are sold without a conventional pickup bed but include a third-party manufactured and installed vocation-specific upfit before delivery.

Customers and commercial fleets benefit from Ram’s relationships with body manufacturers and upfitters, offering:

• Industry-standard cab-to-axle lengths of 60, 84, 108, and 120 in.

• No components or lines above the rear frame rails.

• Through-the-frame plumbing and electrical.

• Diesel exhaust fluid (DEF) tank refill port located at the rear of the cab on the driver’s side.

• New for 2025, power take-off (PTO) capability for left- and right-side operation.

All Ram Chassis Cab trucks equipped with the Cummins Turbo Diesel option come standard with power take-off (PTO) capability with improved use parameters for left- and right-side components and a dedicated switch. It provides minimum split-shaft PTO horsepower while stationary through a remote throttle.

The new offering also protects the engine and PTO equipment with a fail-safe, allowing aerial lifts to be lowered without engine power.

An onboard power inverter offers up to 2.4 kW with a relocatable service point. With the engine running and while the truck is in park, customers can turn the inverter on via the touchscreen and with a switch located to the left of the outlets. The engine will then ramp up rpm to support the onboard power inverter.

A vehicle system interface module (VSIM) can communicate between aftermarket modules and various factory control modules. The VSIM features more than 70 inputs and outputs, including lighting controls, door position, and throttle and transmission position.

Ram also created a digital rearview mirror (DRVM) relocation kit featuring connection points for adding a camera to replace the DRVM camera that an upfit could block.

The new 2025 Ram Chassis Cab also features a standard upfitter electrical connector and an integrated cab configuration for upfitter/conversion solutions.

Hard Work Simplified With Advanced Technology

The 2025 Ram Chassis Cab line features a new Uconnect system with an improved 12-in. screen and intuitive user experience. The Uconnect 5 system offers more connected services and features, including:

• An improved 12-in. touchscreen with higher resolution and a reconfigurable display featuring split-screen capability for dual application operation.

• Advanced Atlantis electrical architecture enhances Uconnect 5 with operating speeds that are five times faster than the previous generation.

Class-exclusive dual wireless phone charging and connectivity ports are available for front passengers.

Lane Keep Assist leverages blind spot sensors for additional lane-centering steering corrections.

A fully digital rearview mirror with tow mode provides rearview video in real-time from a rear-facing camera, offering an unobstructed image by the D-pillars or rear seats. It also reverts to a traditional reflective mirror by toggling a switch.

Telescoping trailer tow mirrors allow the driver to move the mirrors away from the truck to enhance sightlines while towing.

Trailer-Tow Pages allows drivers to view comprehensive trailer monitoring information, including trailer light check-out, trailer brake status, and auxiliary camera shortcuts, which are all-in-one applications accessible through the Uconnect touchscreen.

A 12.3-in. digital gauge cluster shows nearly two dozen menus, including driver-assist technologies such as adaptive cruise control, active driving assist, drowsy driver detection, and traffic sign information.

New standard safety features include adaptive cruise control, forward collision warning-plus, and available ParkSense front/rear park assist.